CVE-2026-93642

An unauthenticated sender can forge a share notification that triggers stored XSS when a signed-in Zimbra Modern recipient clicks Accept Share, allowing the attacker to access mailbox data and act as the victim.

CVSS 3.1

9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 13% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2026-09-25

Modified

2026-09-29

Record from

the NVD, synced 2026-10-19

References

• https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

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